Milling-machine.



G. W; SMITH.

MILLING MACHINE. APPLICATION FILED SEPT. 30, 1911.

1,094,940; I Patented Apr. 28, 1914 3 SHEETS-SHEET 1.

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MILLING MACHINE.

I APPLICATION FILED SEPT. 30, 1911. 1,094,940. Patented Apr. 28, 1914.

3 SHEETS-SHEET 2.

L o/3AM G. w. SMITH. MILLING M AGHINB. APPLICATION FILED SEPT. 30, 1911.

1,094,940. Patented Apr,.-28,1914.-

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UNITED STATES PATENT OFFICE.

GEORGE W. SMITH, OF ROCKFORD, ILLINOIS, ASSIGNOR TO THE INGERSOLL MILLING M ACHINE COMPANY, OF ROCKFORD, ILLINOIS. A CORPORATION OF ILLINOIS.

MILLING-MACHINE..

Specification of Letters Patent. Patented Ap -,'28, 1914,

Application filed September 30. 1911. Serial No. 65 23205.

. tion.

I is a section on line (Z (Z Fig. 3. Fig. 5 is a The obiec't of this invention is to drive the cutter ho ding bar from both ends in order that the torsion strain may be removed.

In L-the accompanying drawings, Figure-1 is a face elevation of a milling machine-containing my improvements, in which sections of the casing are broken away to show the gear drive. Fig. 2 is an end elevation. Fig. 3 1s a section on line a a Fig. 2. Fig. 4

section on line 0 c Fi 3. Fig. 6 is asection on line b b Fig. 3. Fig. 7 is a'section on line c a Fig. 8. Fig. 8 is a section on line f f Fig. 7. Fig. 9 is a section on line 9 9 Fig. 7. Fig. 10 is an elevation of the adjustable connection between the section of the drive shaft, in which one-half is in section. Fig.

11 is an end view of Fig. 10.

The operative parts of the milling machine are supported by the base 1 which also supports a work holding table 2. A main drive shaft is in two sections 3 and at supported in bearings 5. These sections are connected by a coupling in two sections 6' and 7 each formed with a serrated face. The section 7 is formed with slot '8 through which screws 9 pass into the other section'6, by means of which the two sections are clamped together. The section 6 is connected to the shaft section 3 by the key 10, and the section 7 is connected to the shaft section 4 by the key 11. To the shaft section 3 is con-' nected a spur-gear 12 and tothe shaft section 4 is connected a spur-gear The short intermediate shafts 14 and 15 nre supported by the casings 16 and the connected cutters 38.

- displacement by the casings 16 as shown at Fig. 3, in order that the sleeves 21. can move endwisethrough it, and since the construction of both said casings and operative parts inclosed therein is similar, I have deemed it only necessary to show in sectiomb one of them as in Fig. 3, and also describe the construction and operation of same. Around this sleeve 21 is located a collar 23 provided with a rack 21 with which a pinon 25 meshes. This pinion is rotated bv a wrench applied to the projecting end 26 of the shank of the gear 25. The collar 23 is located between the rim27 formed a part of the sleeve 21, and the ring 28 having a screw-threaded connection with the end of the sleeve. The inner end of the sleeve 21 is formed with a transverse rectangular slot 29 from the bottom of which extends a tapered recess 30. The sleeve 21 is formed with an opening 31' extending through its length. A' removable socketblock is provided with a'conical end 32 fitted to the re cess 30, and with a rectangular end 33 fitted to'thc rectangular slot 29. This removable socket block has a square opening 34. through it. A cutter holding bar 35 is provided with a key-way 36, andthe ends of this bar are square to be received in the square openings 3,4 in the removable socket blocks. A center support 37 is provided for the cutter holding bar 35. audio the cutter bar are I The sleeves 21 are withdrawn sufiiciently to allow of the positioning of the cutter holding bar between them, they are tlien moved inward until the square ends .of the cutter bar are received in the square openings of the removable socket blocks. The cutter holding bar is 1'()llt-(l. fl0lll both ends by the gear connection with the sectional drive-shaft. means of the adjustable connection between the sections of the drive-shaft the slack in the teeth of the gearing can be overcome so that both ends of the cutter holding bar may be positively rotated strain; To the section 3 of the drive shaft. is connected a spur gear 39 which is rotated by a gear connection with a motor 40.

I claim as my invention. 1

1. In apparatus of the character set forth.

the combination of two rotatable cutter hold ing members, of common driving means in connection withboth of said cutter holding members for positively drivingsame, and means included in said driving means for allowing adjustable axial movement of one of said cutter holding members relative to the other;

2. In apparatus of the character set forth, the combination with a rotary cutter holding bar, of adriving shaft comprising sec tions, separate sets of gearing extending from the respective sections of the driving shaft to the respective ends of the bar for positively driving the latter at both ends, and

means for positively but adjustably securing driving-shaft sections being relatively rota-' 1 table and having interlocking serrated heads at their adjacent ends, and means for positively locking the heads'together to prevent the relative-rotation of the sections.

at. In apparatusof the character set forth the combination with two rotatable cutter holding members,of a drive-shaft, a driving connection between said drive-shaft and each cutter holding member, and means included 1 in the said drive between said cutter mem connecting the other driving shaft section with the other end portion of the cutter holding bar, said sets of gearing positively driving the latter, a connection between the relative adjustments, but normally holding them positively against relative rotation,

and a motor geared to the driving shaft be. tween the setsof gears.

6. In apparatus of the character setforth,

the combination of a rotary'cutter holding a bar, two rotatable members respectively conincluded in said driving connection for- :allowing adjustable axial movement. of one the my hand in presence of two subscribing \vit- DGSSGSi GEORGE W. SMITH.

Witnesses A. O. BEHEL, E. D. E. N. BEHEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

